@@ -2,29 +2,29 @@ import 'package:flutter/material.dart';
22import 'package:syncfusion_flutter_charts/charts.dart' ;
33
44void main () {
5- return runApp (ChartApp ());
5+ return runApp (_ChartApp ());
66}
77
8- class ChartApp extends StatelessWidget {
8+ class _ChartApp extends StatelessWidget {
99 @override
1010 Widget build (BuildContext context) {
1111 return MaterialApp (
1212 title: 'Chart Demo' ,
1313 theme: ThemeData (primarySwatch: Colors .blue),
14- home: MyHomePage (),
14+ home: _MyHomePage (),
1515 );
1616 }
1717}
1818
19- class MyHomePage extends StatefulWidget {
19+ class _MyHomePage extends StatefulWidget {
2020 // ignore: prefer_const_constructors_in_immutables
21- MyHomePage ({Key key}) : super (key: key);
21+ _MyHomePage ({Key key}) : super (key: key);
2222
2323 @override
2424 _MyHomePageState createState () => _MyHomePageState ();
2525}
2626
27- class _MyHomePageState extends State <MyHomePage > {
27+ class _MyHomePageState extends State <_MyHomePage > {
2828 @override
2929 Widget build (BuildContext context) {
3030 return Scaffold (
@@ -39,25 +39,25 @@ class _MyHomePageState extends State<MyHomePage> {
3939 legend: Legend (isVisible: true ),
4040 // Enable tooltip
4141 tooltipBehavior: TooltipBehavior (enable: true ),
42- series: < ChartSeries <SalesData , String >> [
43- LineSeries <SalesData , String >(
44- dataSource: < SalesData > [
45- SalesData ('Jan' , 35 ),
46- SalesData ('Feb' , 28 ),
47- SalesData ('Mar' , 34 ),
48- SalesData ('Apr' , 32 ),
49- SalesData ('May' , 40 )
42+ series: < ChartSeries <_SalesData , String >> [
43+ LineSeries <_SalesData , String >(
44+ dataSource: < _SalesData > [
45+ _SalesData ('Jan' , 35 ),
46+ _SalesData ('Feb' , 28 ),
47+ _SalesData ('Mar' , 34 ),
48+ _SalesData ('Apr' , 32 ),
49+ _SalesData ('May' , 40 )
5050 ],
51- xValueMapper: (SalesData sales, _) => sales.year,
52- yValueMapper: (SalesData sales, _) => sales.sales,
51+ xValueMapper: (_SalesData sales, _) => sales.year,
52+ yValueMapper: (_SalesData sales, _) => sales.sales,
5353 // Enable data label
5454 dataLabelSettings: DataLabelSettings (isVisible: true ))
5555 ]));
5656 }
5757}
5858
59- class SalesData {
60- SalesData (this .year, this .sales);
59+ class _SalesData {
60+ _SalesData (this .year, this .sales);
6161
6262 final String year;
6363 final double sales;
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